Melanopic photometry

IF 0.1 Q4 INSTRUMENTS & INSTRUMENTATION
Leonid Nazarenko, Olena Didenko
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引用次数: 0

Abstract

Visual lighting effects have been seriously studied for more than 500 years. It was not until 2002 that physicians and biologists paid attention to the fact that the light that enters the human eye has non-visual, biological effects. Human Centric Lighting (HCL) examines the visual effects of light on human activity. Electric lighting plays a critical role in maintaining human health in today’s world, as most of us spend much of our time indoors. In 2002, a third type of photoreceptor was discovered – a nerve node cell in the retina (photosensitive, Retinal Ganglion Cell, pRGC). pRGC cells contain melatonin pigments (melanopsin) and are responsible for the spectral response of photosensitive cells. The maximum response of melatonin is achieved at a wavelength of approximately 480 nm. Fig. 1 also shows the response curves of L-, M-, and S-cones and rods based on their specific pigments. Using the response curves of L-, M-, and S-cones and rods, and having the spectra of light sources and the amount of light on the outer surface of the eye, it is possible to determine the spectrally weighted illuminances for five photopigments in the human eye. For research purposes, it is desirable to record the illuminance values for all five α illuminances. They indicate which of the photoreceptors is responding and where the light of the current lamp type is emitting. The manufacturers of light sources should be able to provide α-wave illuminances for their lamps. The International Commission on Illumination (CIE) suggested Exeltoolbox, which allows calculating these illuminances based on the spectral distribution of the lamp power. Cone-dominant metrics such as CCT (correlated colour temperature), illuminance, and luminance are not comprehensive, so melanopsin-based photosensitivity should be considered in specifications, guidelines, and during research.
黑色光度测量
对视觉照明效果的认真研究已有 500 多年的历史。直到 2002 年,医生和生物学家才注意到,进入人眼的光线具有非视觉的生物效应。以人为本的照明(HCL)研究了光对人类活动的视觉影响。在当今世界,电气照明在维护人类健康方面发挥着至关重要的作用,因为我们大多数人的大部分时间都是在室内度过的。2002 年,人们发现了第三种光感受器--视网膜上的神经节细胞(光敏视网膜神经节细胞,pRGC)。pRGC 细胞含有褪黑激素色素(黑光素),负责光敏细胞的光谱响应。褪黑激素的最大反应波长约为 480 纳米。图 1 还显示了 L 锥体、M 锥体、S 锥体和杆状体根据其特定色素的响应曲线。利用 L 锥体、M 锥体、S 锥体和视杆细胞的响应曲线以及光源的光谱和眼睛外表面的光量,可以确定人眼中五种光色素的光谱加权照度。出于研究目的,最好记录所有五种 α 照度的照度值。它们表明哪个光感受器正在作出反应,以及当前灯泡类型的光正在向哪里发射。光源制造商应能提供其灯具的 α 波照度。国际照明委员会(CIE)建议使用 Exeltoolbox,它可以根据灯功率的光谱分布来计算这些照度。CCT(相关色温)、照度和亮度等锥形主导指标并不全面,因此在规格、指南和研究过程中应考虑基于黑色素的光敏性。
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来源期刊
Ukrainian Metrological Journal
Ukrainian Metrological Journal INSTRUMENTS & INSTRUMENTATION-
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